A new study shows that polar bears require more food than previously thought. The scientists used collars that tracked bears' movements and metabolic rates.
By Anthony Pagano, The Conversation
Warmer temperatures have melted Alaska Natives' traditional permafrost freezers in the U.S. arctic and also forced polar bears onto land near them. They hope stainless steel containers shipped from Oregon will help keep the hungry bears away.
By Kamala Kelkar
Polar bears are gradually moving north in search of longer lasting sea ice, according to findings published in the scientific journal PLOS ONE.
By Carey Reed
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